We are planning on going all the way to Maine this year but the fuel cost have us wondering how much more it will cost. This trip will be broken us into many months but our motorhome gets between 8 and 9 miles per gallon. I was looking for a way to get a picture of the fuel cost and my son, Josh helped me put together this spreadsheet. You can get a picture of how much more it cost as the $$ goes up, but also fuel mileage makes a big difference too. I have slowed form usually going around 63 miles per hour to around 58 miles per hour. It does make a difference. I hope this spreadsheet will help you as you look at your fuel cost.